Journey in offline mode mixes jars on extraction

[cfraenkel]

when running the 0.4.0 offline jar on windows 10 I get a mixed extraction folder that contains the macos jars instead of the windows jars. This in turn leads to a method not found exception from the startup call that does not exist in the older mac version https://github.com/CodeBrig/Journey/blob/master/src/main/java/com/codebrig/journey/JourneyLoader.java#L197-L200.

I suspect that the extraction routine in https://github.com/CodeBrig/Journey/blob/master/src/main/java/com/codebrig/journey/JourneyLoader.java#L138 filtering logic is at fault

[BFergerson]

I believe the 0.4.0-offline distribution to be flawed and I don't currently have the time to fix it. If anyone has a macOS and is able to fix the TravisCI build I could build a new distribution. Till then I would recommend following these instructions: #30 (comment)